MODELING AND SIMULATION OF A BENZENE RECOVERY PROCESS BY EXTRACTIVE DISTILLATION

AUTOR(ES)

Brondani, L. B., Flores, G. B., Soares, R. P.

FONTE

Braz. J. Chem. Eng.

DATA DE PUBLICAÇÃO

2015-03

RESUMO

Abstract Extractive distillation processes with N-formylmorpholine (NFM) are used industrially to separate benzene from six carbon non-aromatics. In the process studied in this work, the stream of interest consists of nearly 20 different hydrocarbons. A new set of NRTL parameters was correlated based on literature experimental data. Both vapor-liquid equilibrium as well as infinite dilution activity coefficient data were taken into account; missing parameters were estimated with the UNIFAC group contribution model. The extractive distillation process was simulated using ASPEN Plus®. Very good agreement with plant data was obtained. The influences of the main operational parameters, solvent to feed ratio and solvent temperature, were studied. Theoretical optimum operating values were obtained and can be implemented to improve the industrial process. Extreme static sensitivity with respect to reboiler heat was observed, indicating that this can be the source of instabilities.

Documentos Relacionados

• Separation of ethanol and water by extractive distillation with salt and solvent as entrainer: process simulation
• Dynamic optimization of the benzene extractive distillation unit
• Simulation of ethanol extractive distillation with mixed glycols as separating agent
• Analysis and extension of the Furter equation, and its application in the simulation of saline extractive distillation columns
• MODELING AND SIMULATION OF A VACUUM MEMBRANE DISTILLATION PLANT COUPLED WITH SOLAR ENERGY AND USING HELICAL HOLLOW FIBERS